The HDMI to DVI converter will not work for this 2007 monitor. In your case, if the HDMI to DVI converter were working, you would only get 1280x800 60Hz. But Dell never tested any converters on this monitor.
* The only resolutions supported by the 12 year old 3007WFP are 1280x800 60Hz or 2560x1600 60Hz
* To get 2560x1600 60Hz, the PC must have a DVI-D DL out port
PC DVI-D out port --> DVI-D to DVI-D cable --> 3007WFP DVI-D in port